香港古树名木资源特征与分布格局

在收集资料的基础上,采用实地调查方法,对香港古树名木资源的种类组成、区系分布和分布格局进行分析。结果表明,香港在册古树名木有485株,隶属36科60属78种,以豆科、大戟科和桃金娘科为优势科,以榕树Ficus microcarpa、印度榕F. elastica和樟Cinnamomum camphora等为主,其分布具有较强的热带属性。从空间分布状况看,香港古树名木分布广泛,但不同区域间的种数和株数的差异显著。DCA(Detruded Correspondence Analysis)分析结果表明,大部分古树名木分布在香港中西区,与其他区有着明显差异。基于调查结果,对香港古树名木资源的保护提出加强立法和宣传教育、进行健康评估和复壮技术研究、设立专项养护经费等建议。

Resource Characteristics and Distribution Pattern of Historical Tree and Famous Tree in Hong Kong

Species composition,flora distribution,and growth status of resources of historical tree and famous tree in Hong Kong are analyzed by field investigation.The results show that there are 485 historical trees belonging to 78 species in 57 genera of 36 families in Hong Kong.The dominant families are Leguminosae,Euphorbiaceae and Myrtaceae,and the dominant species are Ficus microcarpa,F.elastica and Cinnamomum camphora.The distribution of historical tree resources has a strong tropical attribute.From the perspective of spatial distribution status,historical trees are widely distributed,but there are significant differences in the number of species and individuals among different regions.The results of Detruded Correspondence Analysis show that most of historical trees are located in the Central and Western District of Hong Kong,which is significantly different from other areas.Based on investigation results,suggestions on protection of resources of historical tree and famous tree in Hong Kong are proposed,such as strengthening legislation and publicity education,conducting health assessment and rehabilitation technology research,and setting up special maintenance funds.